Motorcycle



P. A. FISKER.

MOTORCYCLE. I

APPLICATION FILED MAY 4. I918- Patented Feb. 24,1920. I

2 SHEETS-SHEET l.

, P. A. FISKER. MOTORCYCLE. APPLICATION FILED MAY 4. 1918- Patented Feb. 24, 1920.

2 SHEETS-SHEET 2.

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falze? flwiem'en/ like?" taken on line AB, Fig. 1.

i UNITED S TES r Tn oFFIo c refinement-Er T0 alt whom it may concern 7 v Be it: known that I, Pnnnn ANnnRsEN FISKER, machine manufacturer, a subject of the Kingdomlof Denmark, residing at No. .80, Peder Bangsvej, in the city 0 Gopenhagen and Kingdom of Denmark, have invented certain new and useful Improve ments in Motorcycles; and I do-hereby d'eclare the following tolbe -a full, clear, and exact description of the invention, suchyas will enablerothe rs skilled in the art to which it appertains to make and usethe same;

This invention relates to motor-cycles and is chiefiycharacterizedin thatlthe front and rear wheelsof. the cycle are resiliently con-- nected with thesteering device of the :cycle and with rigid frame parts respectively by means off-springs; arranged atibot h sides-of the wheels, :theupper ends ofsaid springs being fixed topartslof the steeringdevices which are immovable when thespringsare working, whilethe lower. ends are fixed to inenibers connected. with the 'hubs of the Wheels, whereby the said vmembers are caused I *sides of the wheel and are integral-lycon-. 7 nected attheir for-ward ends by a cross-piece to rock during the compressioneand extension ofthe. springs about fulcnums situated outside the wheels and placed in a fixedrelation to the steering device, and rigid frame parts.

An embodiment of the invention is illustrated in the accompanying drawing, in which:

Figure 1 is a side elevation'of .a motor cycle constructed in accordance 'with' the invention; 7 I

Fig.2 is a perspective view of the steering fork and associated parts; and

Fig. 3' is a fragmental vertical section, showing the pivotal connection of the, rear wheel. with the 2 frame, the section being Referring more particularly to thedrawing, the frame of the cycle, as therein repre sented, is of the type shown and described in my companion application, Serial No. 232,670, filed concurrently herewith, and comprises a substantially U-shaped lower part a and an upper part which is preferably formed by the fuel container'b, the part a being composed of two counterpart spaced members. The steering frame, best shown in Fig. 2, comprises two triangular, or approximately triangular side frames 71,

Y which are disposed at opposite sides of the 7 front wheel 0 and which have their front memb ers extended upward and connected to eeamamaaaa ne sman.

; lower members-of the frames areextended rearward and connected at their free ends byasleeveor the like (Fig. in which the front end to the cross-piece s which is disposed between the veitical rear portions 9' of Sw etie t s sieast Patented. e -.24;19 2Q- Application filed lllliay4,1918. ,s mai'n 232,671.

'rthe post, the upper members of'said frameszbeing connected to the lowcruend ofthe post in some suitable manner-V The rear ends of a pair of links 7e are pivoted,as

'gindicated at m. The front ends of these links k are pivoted to the :hub e of the wheel 0, and between said hub' and the adjacent corners of the side frames i is disposed at opposite sides ofthe wheelie pair of springs g, the arrangement being such that the links are capable of avswinging or rocking movement about the-pivotal :connection m which latter, as will ,beunderstood, is located beyond wheel c.v

*Therear wheel'd has attached toits hub agear, case '0, containingv the usual bevel gears, motion being transmittedv to said gears by ,-1neans-'.ofash-aft (not shown) havinga 7' suitable universaljoint connection with the "motor shaft and arranged in one of apair ofksleeves :l which are located at opposite s hereinafter referred to The sleeve contaming "said transmission shaft is fixedat 1ts rear end to the gear case 0 and at its the "two spaced members of frame a and which is pivotally connected at itsopposite ends to the portion of the motor-casing as indicatedat 02, (Figs. 1 and 3). The other sleeveor tube 1 is similarly attached at its front end to the cross-pieces, but is connected atits rear end tothe brake case,

which, however, is concealed'behind the gear case 0 in Fig. 1 and, hence, does not'appear in that figure. The above mentioned frame partsj are formed at their upper ends with integral, rearw-ardly-extending lugs as 7 shown in Fig. 1, and between the-extremities of these lugs and the tops of the gear and brake cases are interposed springs h, which are similar to and provided for the same purpose as, the springs 9,71. 0., to al- --l0w for a relative yielding movement between the frame and the wheel, the mounting of the sleeves or tubes Z in the manner above described enabling said sleeves to swing or rock about their pivots a which are likewise located beyond the corresponding wheel; a The pivot on which connects the adjacent ends of the parts i and 7c, andabout which said parts rock, may be lubricated from a single central lubricant cup 7 as indicated in Fig. 1, said cup being omltted from I claim as my invention:

1. In a motor cycle, the combination, with the front and rear wheels, the frame and the steering gear mounted in the framerof a motor casing mounted upon the lower portion of the frame; front and rear pairs of members disposed at opposite sides of said V pivotally connectedwith the rear end of the v Wheels and having their outer ends connected with the hubs of the corresponding; :wheels the inner ends of the 'front'm'embers being-mounted on pivots which are located I immediately beyond the front wheel, and

the inner ends of the rearmembers-being motor casing at a: point immediately beyond the rear wheel and front and rear pairs of springs arranged at opposite sides of said wheels directly above the hubs thereof for enabling relative movement between said 4 wheels and said steering gear and frame, the

front pair of springs being interposed between the outer ends of the front pair of members and the. adjacent, portionvof said steering gear, and the rear pairof' springs beinginterposed between the outer ends of the rear pair of members and' the adjacent portion of said frame.

2." In a motor cycle, the combination,witl1 I the front Wheel and the frame; ofa'steering gear mounted in'the frame and comprising apa'ir of substantially triangular side frames (disposed at opposite, sides of the front wheel, a steering post arranged between the side frames, extensions on the front members of the sideframes connectedv to the steering post, "and rearwardly-pro- 'j ecting extensions on the bottom members of said side frames terminating beyond said front wheel, a pair of links disposed at oppositesides of the front wheel, a pivotal connection between the rear ends of said links and those of the rearwardly-projecting extensions of said bottom members,the

' links having their front" ends connected to the hub of. said wheel, and springs interposed between the said front ends of the l'nks and those 'of-thesaid bottom frame 7 members; substantially as described. 7

- 3. In a motor cycle, the combination,- with the frontwheel and the frame; of a steering 'gear mounted in the frame and compris 'ing a pair of substantially triangular side frames disposed at opposite sides 'of the front wheel and-a steering" postarranged between the side frames and witlrwhich the upper ends of the latter, arefeonnected, a

pair oflinksdispo'se'd atoppositesides of said" front wheelandhaving their front endsconnected to the hub thereof, a single ture. 1 i

PEDE-R ANDERSE FISKERI 

